LONDON (WPVI) --ISIS has released a new video threatening attacks in Britain.
It features a man and a child with British accents.
They claim Islamic State extremists will soon invade the U-K.
The ten minute video includes the executions of 5 men accused of spying for Great Britain.
The man with the British accent is the apparent replacement for "Jihadi John", who was killed by a drone strike last year.
Security officials are now working to determine his identity.